Lath-board.



S M. FORD.

LATH BOARD.

APPLICATION FILED Aue.21.1s1s.

- Patented May 21,1918.

[ nmniar SIZZQSMFQTd fliior e To all whom it mag concern and add theretothe additional air sites in. roan, on ST. m, MINNESOTA;

I LATE-BOARD.-

aaeegsraq Be it known that I, SILAs' M. FORD, 'a

citizen of the United States residing at St.

Paul, in they county of Ramseyand State of Minnesota, have inventedcertain new and useful Improvements in. Lath-Boards, lof which thefollowing is a specification.

One object of my invention isv to provide.

in a lath board improved air spacesthat will .be left unfilled withplaster when the lathv board is put into service.

Another object of my invention is to provide means, for applying to lathboards manufactured without the additional air spaces contemplated inthis invention, that can readily be applied to such lath boardsspacescontemplated herein. r

Another object of my invention is to provide a style of lath board thatcan be used either as an insulating medium between walls or floors, oras the commercial type of lath-board. p

Another object of my invention is to pro vide a lath board that can'bepositioned in a cement blockor title, furnishing an insulating wallthrough the body of the block .or

e Y shaped formation serve to space the lath til i Another object of myinvention is to provide means for stifi'ening the lath board to preventdistortion.

With these and 'ncidental objects in view, the invention consists ofcertain novel features of construction and combination of parts, theessential elements of which are hereinafter described with reference tothe drawing which accompanies and forms a part of this specification.

In the drawing Figure 1 is an isometric view of a portion of a lathboard embodying my preferred construction.

Fig. 2 is a similar view of a modification of the same type of board.Fig. 3 is a'similar view of a second modification.

'Fig. 4: is an isometric view of a portion of a still further modifiedform of inserted strip used in the lath board,-and Figure 5 is anisometric view of a cement block or title.

embodying my improved'insulat ing board. A sheet of fibrous water-proofpaper 1, or other suitable material, is corrugated or plaited into adove-tailed formation, as shown in- Fig. 1 and in the space behind.eachof the lath-like projections a strip of similar material isinserted;

' Specificationof Letters Patent.

' Application filed August 21,191 Serial No. 116,146.

Patented May 21,.1Qli8.

when positioned as shown in the drawing, it

'- I This strip 2 is of suflicient width that I maintains acurved shapesoas to provide just behind the lath-like face an air space 3. In themodification shown in Fig. 2, the

strips 2 have a corrugated center 4 to provide additional elasticity,and flat strips 5 either thread'through these corrugations as at 6, orthe corrugations are slotted as at 7, and the strips laid therein.

In order'to stiffen the corrugated sheet 1 without the use of the flatstrips 5, I bend a strip of the material as at 8, giving the arch 9 withthe air space 10 between the arch and the lath-like faces, and continueeach end of the arch into the Z-shaped lips 15,

which are preferably glued or cemented to the corrugated sheet at 12, orif desired are cemented along the entire surface of contact. Thecementing of this Z-shaped stripat "12 and also along the surface 13prevents the angle 14: from readily increasing in size, and

as it is impossible for the board to become distorted without'theseangles 14 being increased, the c'onstruction' gives a stifienedeffect'to the corrugated board. I

In addition the lips '15 terminating'the Z- faces from the wall, andhence provide an air space between the wall and the back faces ofjtheboard, as well as the air spaces 10 between the front faces and the arch9.

I may also employ a strip shaped as shown in Fig. tin place of thestrips 2 illustrated in the other figures forobtaining the same results.

By forming a cement block or tile around a sheet ofinsulating board, asshown in Fig. 5, I secure a substantial solid block of cementitiousmaterial with continuous air spaces extending through the center planeof the block and also with a water-proof medium extending through thecentral plane of the block;

While I have described myinvention and illustrated it in severalparticular designs, I do not wish-it understood that I limit my.

self to these constructions, as the application I of my invention may bevaried in many ways within the scope of the following claims:

Claims: I 1. In a lath board, the combination of a sheet of materialformed into dove-tailed corrugations having alternate faces on eitherside thereof, and a strip of material positioned adjacent to the innersurface of each of said faces, and below the plane of the oppositesurfaces of said lath board?i thereby forming air spaces between saistrips and the inner' faces of said corruguated sheet. I z

2. In a lath" board, the combination with a sheet of insulatingmaterial; formed into dove-tailed shaped corrugations of meansassociated with said dove-tailed shaped corrugations positioned belowtllQOPPOSltB face of said lath board for maintaining air spaces.

throughout the entire body of said sheet.

3. In a lath board, the combination of a sheet of material formed intosubstantially dove-tailed shaped corrugations; a strip of fibrous Waterproof material positioned of substantiallydove-tailed shapedcorrugations and havlng strips of material positioned in each of thecorrugations thus formed and positioned below the face of the completedlath board for maintaining air spaces throughout the block or sheet ofcementitious material in which said insulating board is used.

5. In a lath board the combination of a sheet of material formed intodove-tailed shaped corrugations,- and spacing strips positioned on andrunning longitudinally of the faces formed in said sheet to space saidfaces from the Wall to which said insulating board is applied, saidspacing strips each having a fold or V-shaped section, one

positioned within the depression of the corrugations and the other armlying along the exterior .of the lath-like faces.

- of the arms ofthe V-shaped section being.

. 6. In a lath board the combination of a sheet of insulating materialformed into dove-tailed shaped corrugations; and reinforcing stripshaving V-sh'aPed portions positioned over the outer angles of saiddovetailed corrugations, one arm of each V- shaped portion beingpositioned on the face of the lath-like projection formed, and the otherarm being positioned within thev depression between thelath li'ke faces.

sheet of material formed into substantially dove tailed corrugations,astrip of material positioned in the depressions formed bysaidcorrugations, said strip being formed into a U shaped section withthe ends out 7 In a lath board the combination of a turned and the curveof the bight inverted.

SILAS M. FORD.

4, sin i a

